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首页> 外文期刊>IEICE Transactions on Communications >Comparison of Packet Scheduling Algorithms Focusing on User Throughput in High Speed Downlink Packet Access
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Comparison of Packet Scheduling Algorithms Focusing on User Throughput in High Speed Downlink Packet Access

机译：高速下行分组接入中针对用户吞吐量的分组调度算法比较

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摘要

This paper compares by computer simulation the achievable throughput performance employing fast packet scheduling algorithms focusing on the throughput of each user in High Speed Downlink Packet Access (HSDPA). Three packet scheduling algorithms are employed: the Maximum carrier-to-interference power ratio (GIR), Proportional Fairness (PF), and Round Robini (RR) methods. The simulation results elucidate that although the Maximum CIR method achieves an aggregated user throughput within a cell higher than that using the PF and RR methods, the PF method is advantageous because it enhances the user throughput, for a large number of users with a lower received signal-to-interference power ratio (SIR), who are located outside the normalized distance of 0.6 0.7 from a cell site (this corresponds to the area probability of 50-60% within the cell) compared to the Maximum CIR method. It is also shown that, when the PF method is employed, the probability of user throughput of greater than 2 Mbps in the vicinity of the cell site becomes approximately 45% (5%) for L = 1-path (2-path) fading channel, while it is almost 80% (50%) when using the Maximum CIR method. Finally, we show that the average user throughput, in a 2-path Rayleigh fading channel is reduced by approximately 30% compared to that in a 1-path channel due to severe multi-path interference (MPI) and that the average user throughput is strongly affected by the total traffic produced within a cell, which is directly dependent on the number of users within a cell and the data, size per pa,cket call.
机译：本文通过计算机仿真比较了使用快速分组调度算法可实现的吞吐量性能，该算法侧重于高速下行链路分组访问（HSDPA）中每个用户的吞吐量。采用了三种分组调度算法：最大载波干扰功率比（GIR），比例公平性（PF）和Round Robini（RR）方法。仿真结果表明，尽管最大CIR方法在小区内的聚合用户吞吐量比使用PF和RR方法要高，但是PF方法是有利的，因为它可以提高用户吞吐量，对于大量接收较低的用户与最大CIR方法相比，信号与干扰功率之比（SIR）处于距小区位置0.6 0.7的归一化距离之外（这对应于小区内50-60％的面积概率）。还表明，当使用PF方法时，对于L = 1路径（2路径）衰落，在小区站点附近用户吞吐量大于2 Mbps的概率变为大约45％（5％）。频道，而使用“最高CIR”方法时则接近80％（50％）。最后，我们表明，由于严重的多径干扰（MPI），与1路径信道相比，在2路径瑞利衰落信道中的平均用户吞吐量降低了约30％，并且平均用户吞吐量为强烈地受一个单元内产生的总流量的影响，该总流量直接取决于一个单元内的用户数量以及数据，每人每次通话的大小。

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